Спираль
Спираль — хăшпĕр йышши йĕрсем тĕлĕшпе историлле майпа çирĕпленне ят. 

Çав вăхăтрах спираль пирки математика енчен тĕллĕхлĕ палăртавсем те майлаштараççĕ.

Лаптак спиральсем

Уçлăхри спиральсем

Сферăлла спираль

Çавăн пекех 
 Геликоид
 Синусоидăлла спираль

Асăрхавсем

Литература 
 Cook, T., 1903. Spirals in nature and art. Nature 68 (1761), 296.
 Cook, T., 1979. The curves of life. Dover, New York.
 Habib, Z., Sakai, M., 2005. Spiral transition curves and their applications. Scientiae Mathematicae Japonicae 61 (2), 195—206.
 Dimulyo, S., Habib, Z., Sakai, M., 2009. Fair cubic transition between two circles with one circle inside or tangent to the other. Numerical Algorithms 51, 461—476  .
 Harary, G., Tal, A., 2011. The natural 3D spiral. Computer Graphics Forum 30 (2), 237—246  .
 Xu, L., Mould, D., 2009. Magnetic curves: curvature-controlled aesthetic curves using magnetic ﬁelds. In: Deussen, O., Hall, P. (Eds.), Computational Aesthetics in Graphics, Visualization, and Imaging. The Eurographics Association .
 Wang, Y., Zhao, B., Zhang, L., Xu, J., Wang, K., Wang, S., 2004. Designing fair curves using monotone curvature pieces. Computer Aided Geometric Design 21 (5), 515—527 .
 A. Kurnosenko. Applying inversion to construct planar, rational spirals that satisfy two-point G2 Hermite data. Computer Aided Geometric Design, 27(3), 262—280, 2010 .
 A. Kurnosenko. Two-point G2 Hermite interpolation with spirals by inversion of hyperbola. Computer Aided Geometric Design, 27(6), 474—481, 2010.
 Miura, K.T., 2006. A general equation of aesthetic curves and its self-affinity. Computer-Aided Design and Applications 3 (1-4), 457—464 .
 Miura, K., Sone, J., Yamashita, A., Kaneko, T., 2005. Derivation of a general formula of aesthetic curves. In: 8th International Conference on Humans and Computers (HC2005). Aizu-Wakamutsu, Japan, pp. 166—171 .
 Meek, D., Walton, D., 1989. The use of Cornu spirals in drawing planar curves of controlled curvature. Journal of Computational and Applied Mathematics 25 (1), 69-78 .
 Farin, G., 2006. Class A Bézier curves. Computer Aided Geometric Design 23 (7), 573—581 .
 Farouki, R.T., 1997. Pythagorean-hodograph quintic transition curves of monotone curvature. Computer-Aided Design 29 (9), 601—606.
 Yoshida, N., Saito, T., 2006. Interactive aesthetic curve segments. The Visual Computer 22 (9), 896—905  .
 Yoshida, N., Saito, T., 2007. Quasi-aesthetic curves in rational cubic Bézier forms. Computer-Aided Design and Applications 4 (9-10), 477—486  .
 Ziatdinov, R., Yoshida, N., Kim, T., 2012. Analytic parametric equations of log-aesthetic curves in terms of incomplete gamma functions. Computer Aided Geometric Design 29 (2), 129—140 .
 Ziatdinov, R., Yoshida, N., Kim, T., 2012. Fitting G2 multispiral transition curve joining two straight lines, Computer-Aided Design 44(6), 591—596 .
 Ziatdinov, R., 2012. Family of superspirals with completely monotonic curvature given in terms of Gauss hypergeometric function. Computer Aided Geometric Design 29(7): 510—518, 2012 .
 Ziatdinov, R., Miura K.T., 2012. On the Variety of Planar Spirals and Their Applications in Computer Aided Design. European Researcher 27(8-2), 1227—1232 .